Mirra Mirra On The Wall is the first fanisode that Mirra appears in.


When a mysterious teenager arrives in Gravity Falls, followed by feds, Dipper must try to discover her secrets while helping her escape the FBI


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The cryptogram at the end credits reads PDBEH WKH WUXWH UHDOOB IVQ'W RXW WKHUH, which translated reads: Maybe the truth really isn't out there, a twist on the X-files motto "The truth is out there" and a reference to how Dipper learns barely anything about Mirra's secrets.

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